305071472861 has 2 divisors, whose sum is σ = 305071472862. Its totient is φ = 305071472860.

The previous prime is 305071472819. The next prime is 305071472879. The reversal of 305071472861 is 168274170503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161760013636 + 143311459225 = 402194^2 + 378565^2 .

It is a cyclic number.

It is not a de Polignac number, because 305071472861 - 2³⁴ = 287891603677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305071477861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152535736430 + 152535736431.

It is an arithmetic number, because the mean of its divisors is an integer number (152535736431).

Almost surely, 2^305071472861 is an apocalyptic number.

It is an amenable number.

305071472861 is a deficient number, since it is larger than the sum of its proper divisors (1).

305071472861 is an equidigital number, since it uses as much as digits as its factorization.

305071472861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 305071472861 in words is "three hundred five billion, seventy-one million, four hundred seventy-two thousand, eight hundred sixty-one".